So I may not have found my game about zombie defense, but there are no shortage of movies on the subject. I completely stumbled upon Fido by chance last night. Nothing about the title or cover caught my eye, and honestly I would have skipped it entirely if it hadn't been on Xbox Live Marketplace when I was too lazy to go to the video store down the block. The preview totally won me over.
Fido can kind of be described as Dawn of the Dead meets Pleasantville. Or maybe as an extension of the resolution of Shaun of the Dead. Or as a macabre Lassie. Anyway, the concept is brilliant and the movie sports some of the funniest lines I've heard in a long time. It's kind of a one-note, but that particular note doesn't wear out before the movie's over. If you find zombies in the least part amusing you should check out Fido.
But beware old people - they are not to be trusted.